Evidence map›Paper›PMID 22820848›Full record

ArticleAnesthesiology2012

Roles of Gr-1+ leukocytes in postincisional nociceptive sensitization and inflammation.

Peyman Sahbaie, Xiangqi Li, Xiaoyou Shi, J David Clark

Abstract read
In one paragraph

Article in Anesthesiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. The mechanisms and management of persistent postsurgical pain.Frontiers in pain research (Lausanne, Switzerland) · 2023
    Review
  7. Skin-resident dendritic cells mediate postoperative pain via CCR4 on sensory neurons.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  8. Article
  9. Article
  10. Longitudinal peripheral tissue RNA-Seq transcriptomic profiling, hyperalgesia, and wound healing in the rat plantar surgical incision model.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2021
    Article
  11. Investigating the Role of Ly6GFrontiers in pain research (Lausanne, Switzerland) · 2021
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Sigma-1 receptors control immune-driven peripheral opioid analgesia during inflammation in mice.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  19. Article
  20. CD11b+Ly6G- myeloid cells mediate mechanical inflammatory pain hypersensitivity.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Peyman SahbaieAnesthesiology Service, Veterans Administration Palo Alto Health Care System, Palo Alto, California, and Department of Anesthesia, Stanford University, Palo Alto, California, USA. psahbaie@stanford.edu
Xiangqi Li
Xiaoyou Shi
J David Clark

Funding

Complement System Modulation of Nociception and Inflammation after IncisionR01GM079126 · NIGMS · PALO ALTO VETERANS INSTIT FOR RESEARCH · PI CLARK, DAVID J. · 2008 to 2011
$1.4M
NIGMS NIH HHS GM079126NIGMS NIH HHS R01 GM079126
6 · The paper itself

Abstract

backgroundNeutrophils are one of the predominant immune cells initially migrating to surgical wound edges. They produce mediators both associated with supporting (interleukin [IL]-1β, C5a) and reducing (opioid peptides) pain. Studies demonstrate neutrophil depletion/blockade reduces nociceptive sensitization after nerve injury and carrageenan administration, but enhance sensitization in complete Freund's adjuvant inflammation. This research identifies the contribution of infiltrating neutrophils to incisional pain and inflammation.

methodsAntibody-mediated Gr1 neutrophil depletion preceded hind paw incisions. Sensitization to mechanical and thermal stimuli, effects on edema and local levels of IL-1β and C5a were measured. Local effects of C5a or IL-1 receptor antagonists PMX-53 and anakinra on sensitization after neutrophil depletion were examined. Groups of 4-8 mice were used.

resultsAnti-Gr1 antibody depleted more than 90% of circulating and infiltrating skin neutrophils after incision. Neutrophil depletion did not change magnitude or duration of mechanical hypersensitivity in incised mice. However, paw edema was significantly reduced and heat hypersensitivity was slightly increased in depleted animals. In depleted animals IL-1β levels were half of controls 24 h after incision, whereas C5a levels were increased in both. Prominent IL-1β immunohistochemical staining of epidermis was seen in both groups. PMX-53 and anakinra reduced incisional mechanical and heat nociceptive sensitization to the same extent, regardless of neutrophil depletion.

conclusionsNeutrophil-derived IL-1β and C5a do not appear to contribute critically to peri-incisional nociceptive signaling. Other sources of mediators, such as epidermal cells, may need to be considered. Controlling inflammatory activation of resident cells in epidermis/deeper structures may show therapeutic efficacy in reducing pain from surgical incisions.

Indexed as

AnimalsAntigens, LyComplement C5aInflammationInterleukin-1betaMaleMiceMice, Inbred C57BLNeutrophilsPainReceptors, ChemokineAntigens, LyComplement C5aGr-1 protein, mouseInterleukin-1betaLy6G antigen, mouseReceptors, Chemokine

Identifiers

PMID22820848
PMCPMC3427475

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.